Capturing barley grass in broad acre paddocks

2017

Research organisaton
Funding source

Trial details

Researcher(s) Amanda Cook (SARDI)
Year(s) 2017
Contributor SARDI Minnipa Agricultural Centre
Trial location(s) Condado, SA
Minnipa, SA
Yaninee, SA
Related trials
Capturing barley grass in broad acre paddocks locations
Aims

To investigate swathing early then harvesting for weed seed collection to evaluate usefulness for farmers in providing another tool for integrated weed management, especially for barley grass that matures and sheds seed before crops ripen.

Key messages

In 2017, approximately 50% of barley grass weed seed was already on the ground (dropped) before the first swathing opportunity.

Lead research organisation SARDI Minnipa Agricultural Centre
Host research organisation N/A
Trial funding source SAGIT S117
Related program N/A
Acknowledgments

Thank you to Bruce Heddle, Matt Cook and Oswald families for having the monitoring on their property. Thank you to Brett Hay, Katrina Brands and Rochelle Wheaton for helping to monitor the paddocks and processing the barley grass samples, and Ben Fleet for information regarding methodology for weed seed monitoring.


Other trial partners Not specified
Download the trial report to view additional trial information

Method

Crop type Cereal (Grain): Wheat
Treatment type(s)
  • Management systems: Integrated weed management
Trial type Experimental
Trial design Replicated

Condado 2017

Sowing machinery

Four quadrats were taken at GPS-located sampling points before swathing. Crop and weeds were cut at 15-17 cm height (header cutting height). Crop and grass weeds were separated to measure weight and weed seed head length and calculate potential weed seed capture. Surface soil was also collected, and barley grass weed seeds were cleaned from the soil sample and weighed to calculate the weed seed which had dropped before swathing. To assess weed seed capture in chaff dumps after harvest, chaff was collected from paddock dumps to determine the species being collected at harvest by planting the chaff out in trays and assessing for weed germination every four weeks.

Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication Not specified

Minnipa 2017

Sowing machinery Not specified
Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication Not specified

Yaninee 2017

Sowing machinery Not specified
Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication Not specified
Download the trial report to view additional method/treatment information
Trial source data and summary not available
Check the trial report PDF for trial results.
Observed trial site soil information
Trial site soil testing
Not specified
Soil conditions
Trial site Soil texture
Condado, SA Not specified
Minnipa, SA Not specified
Yaninee, SA Not specified
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Condado, SA Calcarosol
Minnipa, SA Calcarosol
Yaninee, SA Calcarosol
Soil Moisture Source: BOM/ANU
Average amount of water stored in the soil profile during the year, estimated by the OzWALD model-data fusion system.
Year Condado SA Minnipa SA Yaninee SA
2017 144.8mm323.8mm258.0mm
2016 134.6mm315.3mm252.6mm
2015 111.5mm289.3mm229.0mm
2014 161.7mm336.5mm282.0mm
2013 115.1mm290.8mm214.6mm
2012 117.0mm330.8mm239.6mm
2011 169.9mm383.4mm265.9mm
2010 159.7mm385.3mm268.0mm
2009 198.2mm391.3mm267.2mm
2008 145.6mm330.4mm206.9mm
2007 133.0mm331.2mm223.6mm
2006 154.6mm334.5mm245.6mm
2005 144.1mm288.0mm216.2mm
2004 147.8mm296.1mm199.1mm
2003 143.7mm293.2mm212.1mm
2002 129.6mm283.3mm219.0mm
2001 157.2mm343.9mm265.8mm
2000 159.4mm389.0mm276.5mm
National soil grid Source: CSIRO/TERN
NOTE: National Soil Grid data is aggregated information for background information on the wider area
Actual soil values can vary significantly in a small area and the trial soil tests are the most relevant data where available

Soil properties

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Climate

Condado SA 2017


Observed climate information

Rainfall trial total (mm) 233mm
Rainfall trial gsr (mm) 123mm

Derived climate information

Condado SA

Minnipa SA

Yaninee SA

Condado SA

NOTE: Exact trial site locality unknown - Climate data may not be accurate
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Minnipa SA

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Yaninee SA

NOTE: Exact trial site locality unknown - Climate data may not be accurate
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Some data on this site is sourced from the Bureau of Meteorology

SILO weather estimates sourced from https://www.longpaddock.qld.gov.au/silo/
Jeffrey, S.J., Carter, J.O., Moodie, K.B. and Beswick, A.R. (2001). Using spatial interpolation to construct a comprehensive archive of Australian climate data , Environmental Modelling and Software, Vol 16/4, pp 309-330. DOI: 10.1016/S1364-8152(01)00008-1.

Trial report and links

2017 trial report



Trial last modified: 03-09-2019 14:42pm AEST